EP0897477A4 - Electromagnetically suspended and rotated centrifugal pumping apparatus and method - Google Patents
Electromagnetically suspended and rotated centrifugal pumping apparatus and methodInfo
- Publication number
- EP0897477A4 EP0897477A4 EP97923548A EP97923548A EP0897477A4 EP 0897477 A4 EP0897477 A4 EP 0897477A4 EP 97923548 A EP97923548 A EP 97923548A EP 97923548 A EP97923548 A EP 97923548A EP 0897477 A4 EP0897477 A4 EP 0897477A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- fluid
- pump housing
- integral
- pumping apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000005086 pumping Methods 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 abstract 3
- 239000013060 biological fluid Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
- A61M60/232—Centrifugal pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/562—Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/804—Impellers
- A61M60/806—Vanes or blades
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
- A61M60/822—Magnetic bearings specially adapted for being actively controlled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0444—Details of devices to control the actuation of the electromagnets
- F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors
- F16C32/0448—Determination of the actual position of the moving member, e.g. details of sensors by using the electromagnet itself as sensor, e.g. sensorless magnetic bearings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/824—Hydrodynamic or fluid film bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/50—Bearings
- F05B2240/51—Bearings magnetic
- F05B2240/515—Bearings magnetic electromagnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2316/00—Apparatus in health or amusement
- F16C2316/10—Apparatus in health or amusement in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
- F16C2316/18—Pumps for pumping blood
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
- Centrifugal Separators (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1685796P | 1996-05-03 | 1996-05-03 | |
US16857P | 1996-05-03 | ||
PCT/US1997/007567 WO1997042414A1 (en) | 1996-05-03 | 1997-05-05 | Electromagnetically suspended and rotated centrifugal pumping apparatus and method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0897477A1 EP0897477A1 (en) | 1999-02-24 |
EP0897477A4 true EP0897477A4 (en) | 2001-05-16 |
Family
ID=21779369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97923548A Withdrawn EP0897477A4 (en) | 1996-05-03 | 1997-05-05 | Electromagnetically suspended and rotated centrifugal pumping apparatus and method |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0897477A4 (en) |
JP (1) | JP2000510929A (en) |
KR (1) | KR20000010736A (en) |
CN (1) | CN1228140A (en) |
AU (1) | AU722998B2 (en) |
BR (1) | BR9709305A (en) |
CA (1) | CA2253666A1 (en) |
WO (1) | WO1997042414A1 (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5928131A (en) * | 1997-11-26 | 1999-07-27 | Vascor, Inc. | Magnetically suspended fluid pump and control system |
US6293901B1 (en) | 1997-11-26 | 2001-09-25 | Vascor, Inc. | Magnetically suspended fluid pump and control system |
CN1109817C (en) * | 1998-01-27 | 2003-05-28 | 流体动力环有限公司 | Machine, in particular electrical machine, in particular energy converter for flowing fluids and gases |
JP3689567B2 (en) * | 1998-09-29 | 2005-08-31 | 京セラ株式会社 | Centrifugal blood pump |
SE9804317D0 (en) * | 1998-12-15 | 1998-12-15 | Gunnar Bjoerk | pulse Pump |
EP1013294B1 (en) * | 1998-12-16 | 2007-04-18 | Levitronix LLC | Diagonal flux pump |
CN1181274C (en) * | 2002-06-06 | 2004-12-22 | 陈昌奎 | Liquid-type power transmission mechanism |
US8552608B2 (en) | 2006-08-31 | 2013-10-08 | Smartin Technologies Llc | Modular magneto mechanical device |
ES2681744T3 (en) | 2010-02-17 | 2018-09-14 | Flow Forward Medical, Inc. | System to increase the total diameter of veins |
US9662431B2 (en) | 2010-02-17 | 2017-05-30 | Flow Forward Medical, Inc. | Blood pump systems and methods |
US9555174B2 (en) | 2010-02-17 | 2017-01-31 | Flow Forward Medical, Inc. | Blood pump systems and methods |
WO2012024493A1 (en) | 2010-08-20 | 2012-02-23 | Thoratec Corporation | Implantable blood pump |
EP2549113B1 (en) * | 2011-07-20 | 2018-10-24 | Levitronix GmbH | Magnetic rotor and rotation pump with a magnetic rotor |
AU2012296563B2 (en) | 2011-08-17 | 2017-05-04 | Artio Medical, Inc. | System and method to increase the overall diameter of veins and arteries |
US10426878B2 (en) | 2011-08-17 | 2019-10-01 | Flow Forward Medical, Inc. | Centrifugal blood pump systems |
US10258730B2 (en) | 2012-08-17 | 2019-04-16 | Flow Forward Medical, Inc. | Blood pump systems and methods |
EP2865397A1 (en) * | 2013-10-22 | 2015-04-29 | Berlin Heart GmbH | Method for operating a pump device and pump device |
CN104307063B (en) * | 2014-10-17 | 2017-01-18 | 山东科技大学 | Magnetic resistance suspension centrifugal type device |
EP3400033B1 (en) * | 2016-01-06 | 2024-06-05 | Bivacor Inc. | Heart pump with impeller axial position control |
CA3021657A1 (en) | 2016-04-29 | 2017-11-02 | Flow Forward Medical, Inc. | Conduit tips and systems and methods for use |
CN105909563A (en) * | 2016-07-12 | 2016-08-31 | 合肥新沪屏蔽泵有限公司 | Pump body of shield pump |
CN106860929B (en) * | 2017-01-16 | 2019-02-01 | 哈尔滨理工大学 | A kind of blood pump for magnetic liquid coupling suspension type impeller displacement measurement |
EP3606577A2 (en) | 2017-04-05 | 2020-02-12 | Bivacor Inc. | Heart pump drive and bearing |
CN107100855B (en) * | 2017-06-05 | 2019-02-05 | 兰州理工大学 | A kind of solid-liquid two-phase flow pump |
CN107715203A (en) * | 2017-09-18 | 2018-02-23 | 上海交通大学医学院附属上海儿童医学中心 | A kind of single fulcrum magnetomotive drive-type centrifugal pump |
CN108194374B (en) * | 2017-12-29 | 2020-02-07 | 李少龙 | Magnetic suspension internal flow type rotor pipeline pump |
US10973967B2 (en) | 2018-01-10 | 2021-04-13 | Tc1 Llc | Bearingless implantable blood pump |
CN110711267A (en) * | 2018-07-13 | 2020-01-21 | 西安市第三医院 | Pleuroperitoneal cavity effusion tumor removing and drainage device |
EP3795836A1 (en) * | 2019-09-18 | 2021-03-24 | Levitronix GmbH | Centrifugal pump and pump housing |
CN110947040A (en) * | 2019-12-18 | 2020-04-03 | 山东大学 | Extracorporeal circulation blood pump and method |
CN112121249B (en) * | 2020-10-21 | 2022-07-01 | 山东大学 | In-vitro centrifugal magnetic suspension artificial heart pump and use method |
CN113771303B (en) * | 2021-11-10 | 2022-02-08 | 东营品航精密模具有限公司 | Full-automatic impeller mould |
CN114152404B (en) * | 2022-02-08 | 2022-09-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-precision pitching moment measuring device based on air bearing |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4135253A (en) * | 1976-11-30 | 1979-01-23 | Medtronic, Inc. | Centrifugal blood pump for cardiac assist |
US4688998A (en) * | 1981-03-18 | 1987-08-25 | Olsen Don B | Magnetically suspended and rotated impellor pump apparatus and method |
JPH0722401B2 (en) * | 1984-01-31 | 1995-03-08 | ソニー株式会社 | Video signal recording / reproducing device |
US4589822A (en) * | 1984-07-09 | 1986-05-20 | Mici Limited Partnership Iv | Centrifugal blood pump with impeller |
US4880362A (en) * | 1988-05-24 | 1989-11-14 | Laing Karsten A | Rotor with stabilizing magnets |
US5017103A (en) * | 1989-03-06 | 1991-05-21 | St. Jude Medical, Inc. | Centrifugal blood pump and magnetic coupling |
JP3006865B2 (en) * | 1990-10-11 | 2000-02-07 | エヌティエヌ株式会社 | Turbo pump |
US5112202A (en) * | 1990-01-31 | 1992-05-12 | Ntn Corporation | Turbo pump with magnetically supported impeller |
US5195877A (en) * | 1990-10-05 | 1993-03-23 | Kletschka Harold D | Fluid pump with magnetically levitated impeller |
US5470208A (en) * | 1990-10-05 | 1995-11-28 | Kletschka; Harold D. | Fluid pump with magnetically levitated impeller |
US5507629A (en) * | 1994-06-17 | 1996-04-16 | Jarvik; Robert | Artificial hearts with permanent magnet bearings |
-
1997
- 1997-05-05 CN CN97195201A patent/CN1228140A/en active Pending
- 1997-05-05 CA CA002253666A patent/CA2253666A1/en not_active Abandoned
- 1997-05-05 BR BR9709305A patent/BR9709305A/en not_active Application Discontinuation
- 1997-05-05 JP JP09540114A patent/JP2000510929A/en active Pending
- 1997-05-05 WO PCT/US1997/007567 patent/WO1997042414A1/en not_active Application Discontinuation
- 1997-05-05 EP EP97923548A patent/EP0897477A4/en not_active Withdrawn
- 1997-05-05 AU AU29324/97A patent/AU722998B2/en not_active Ceased
- 1997-05-05 KR KR1019980708847A patent/KR20000010736A/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
No further relevant documents disclosed * |
Also Published As
Publication number | Publication date |
---|---|
JP2000510929A (en) | 2000-08-22 |
WO1997042414A1 (en) | 1997-11-13 |
CA2253666A1 (en) | 1997-11-13 |
KR20000010736A (en) | 2000-02-25 |
CN1228140A (en) | 1999-09-08 |
EP0897477A1 (en) | 1999-02-24 |
BR9709305A (en) | 1999-08-10 |
AU2932497A (en) | 1997-11-26 |
AU722998B2 (en) | 2000-08-17 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: UNIVERSITY OF VIRGINIA PATENT FOUNDATION Owner name: MEDQUEST PRODUCTS, INC. Owner name: UNIVERSITY OF UTAH RESEARCH FOUNDATION |
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Effective date: 20021010 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20030820 |